2021 Map of Arrowhead Reservoir

About this map

Thunder Basin National Grassland dominates the southern landscape of this 2021 survey, where the drainages of Crook and Weston counties converge. The terrain is defined by an intricate network of draws and ridges, including the prominent Little Pine Ridge and the broad expanse of Hopper Flat. Water management in this arid environment is anchored by the Jeff Davis Reservoir and a series of seasonal creek beds such as Little Pine Ridge Cr and Sage Cr. Access to these remote reaches is maintained by a grid of named routes like James Prazma Rd and Stevens Rd. The map illustrates the persistent importance of natural landmarks in high plains navigation, where features like Fredrickson Draw, Wolfe Draw, and Busby Draw serve as critical geographic markers for ranching and public land management.